WO2013047177A1 - Powder and granular material separation processing device, powder and granular material separation processing method, and powder and granular material separation and recovery processing system - Google Patents

Abstract

[Purpose] To introduce a mixture to be processed, in which powder and granular material with comparatively large specific gravity and hardness and lightweight foreign substances that come along with the same have been mixed, into a system and separate the same by a dry method. [Solution] A powder and granular material separation processing device (X) wherein a dust collection device, electric vacuum cleaner, or other external suction machine is connected thereto, and a mixture to be processed is introduced by suction to a separation processing vessel (1) and, along with recovering the powder and granular material within the system, lightweight foreign substances are discharged outside of the system. The separation processing vessel (1) is provided with a suction introduction tube (2) that receives the mixture to be processed on the circumferential surface and is attached and sealed as an upper part structure of a hopper tank (4) that collects and stores the powder and granular material, and a suction discharge tube (3) that is connected to the external suction machine is provided on the upper surface of the vessel. In addition, the separation processing vessel (1) has a separation cone (11), the bottom surface of which is formed into a funnel shape, and a cylindrical opening (13) that hangs in a protruding shape downward from the tip part of the separation cone (11) and for which the opening diameter thereof is formed with a stepwise reduction. The tip part of the suction discharge tube (3) has a multiple pipe constitution, and each pipe is given a pipe diameter smaller than the opening diameter for the cylindrical opening (13), is loosely inserted, and approaches the tip part of the opening.

Description

POWDER PARTICLE SEPARATING PROCESSING APPARATUS, POWDER PARTICLE SEPARATING TREATMENT METHOD, AND POWDER PARTICLE SEPARATING COLLECTION

The present invention is based on a mixture to be treated in which a granular material having a grit-like or shot-like initial shape having a relatively large specific gravity and hardness and a particle size of several millimeters or less, and light-weight foreign substances accompanied therewith are mixed. The present invention relates to a granular material separation processing apparatus, a granular material separation processing method, and a granular material separation and recovery processing system, which are introduced into the inside and dry-process the separation of the granular material and the lightweight foreign substances.

More specifically, the present invention according to the first basic application (Japanese Patent Application No. 2011-213978) introduces the mixture to be treated by suction into a separation container connected to an external suction device such as a dust collector or a vacuum cleaner. Then, separation is performed using an air flow and a specific gravity difference while controlling the flow in the container, the powder particles are collected in the system, and the lightweight foreign matters are discharged out of the system toward the external suction device. The present invention relates to a granular material separation processing apparatus and a granular material separation processing method.

Further, the present invention according to the second basic application (Japanese Patent Application No. 2012-1781) includes the above-described powder / particle separation processing apparatus as one apparatus of the apparatus system, and is vacuum connected to the powder / particle separation processing apparatus. The present invention relates to a granular material separation / recovery processing system in which front / rear linked devices (devices) are housed in a single frame as a platform, and are arranged in a line in the order of processes to perform systematic processing. Note that the terms system and system are used interchangeably.

As a typical example of the mixture to be treated which is handled by the present invention, there can be mentioned a material made of a grinding material (powder) subjected to a blasting process by a dry air blasting apparatus and light-weight foreign substances accompanied therewith. It can be said that the specific gravity of the abrasive (powder particles) and the light-weight foreign matter are both single digits, and the specific gravity difference between the two is relatively small.

Here, abrasives are roughly divided into metallic and non-metallic. The metal-based abrasive is a so-called steel grit or steel shot called cast iron or cast steel powder. The non-metallic abrasive is a grit-like or shot-like powder of a natural mineral or an artificial mineral (see the section of abrasive in the general blasting method for JIS Z0310 substrate adjustment if necessary).

In addition, the grit [grit] refers to particles having an angular shape, and the shot [shot] refers to particles having a less angular shape.

Conventionally, in order to recover waste plastics generated from containers, household electrical appliance waste, information equipment waste, etc. as recycled resin, the particle diameter is crushed to 10 mm or less, and peeling of the deteriorated surface layer has been mainly performed. 2. Description of the Related Art A cyclone type air flow application separation apparatus is known that uses a plastic crushed granule containing a large number of lightweight foreign matters such as paper pieces after dry cleaning for the purpose of treatment (see, for example, Patent Document 1). .

The cyclone type refers to a separation method in which a dust-containing gas (same as the gas to be treated-containing gas) is swirled to collect or classify particles and the like by centrifugation.

The point to be observed here is that the centrifugally-falling granular material-containing air flow is gathered as a vortex flow in which the flow velocity is suddenly increased by the partition plate having the opening in the center to the lower space portion of the tip opening of the air flow discharge pipe. In other words, the function of separating lightweight foreign substances from the solid content is promoted and the floating separation efficiency by the upward flow is increased.

However, it is presumed that the discarded plastics after the crushing treatment are requested (allowed) to be 10 mm or less, the particle size distribution is messy and the bulk specific gravity varies. In short, the granular solids generated by crushing and the separated surface grinding layer (pulverized fine powder), paper pieces, tape pieces, and other light foreign matters with small bulk specific gravity, etc. will be floated and sorted using a cyclone type air flow. Seem.

On the other hand, some proposals for separating and collecting used blasting material (corresponding to the grinding material of the present invention) are also known (see, for example, Patent Documents 2, 3, 4, and 5). These conventional examples are generally filter separation, sieve sorting, wind sorting or floating sorting.

JP 2004-283720 A JP 2004-9222 A Japanese Patent Laid-Open No. 2001-212764 JP-A-9-193019 JP-A-8-25223

In recent years, as a non-metallic abrasive for blasting, "silica sand" is not used from the viewpoint of silicosis as a natural mineral, so the use of Almandingernet [Fe ₃ Al ₂ (SiO ₄ ) ₃ ] has increased. is doing. Among the typical physical properties, the specific gravity is 4.1 and the Mohs hardness is 7.6-8.3. Garnet currently relies heavily on imports.

For example, the property of the garnet powder (mixture to be treated) that has undergone the blasting process is approximately 3 mm or less in terms of the particle size distribution (particle size). Then, assuming that the garnet powder that can be reused as an abrasive (after depletion) is 0.2 mm or more, the surface of the powder of less than 0.2 mm, more specifically less than 0.1 mm peeled ( It is a powder (hereinafter referred to as industrial waste powder) that can be disposed of, consisting of lightweight foreign substances such as a coated film or rust and grinding powder generated by wear. Currently, this type of abrasive is discarded after the blasting process.

Among them, a mixture to be treated in which a granular material having a grit-like or shot-like initial shape having a relatively large specific gravity and hardness and a particle size of several millimeters or less, and light-weight foreign substances accompanied therewith, in particular, Efficiently separate powder (including lightweight foreign substances accompanying it) that has undergone a blasting process using a dry air blasting device, and collect reusable powder (hereinafter recyclable granules) Therefore, it is strongly desired to promote material recycling. This kind of mixture to be treated has a relatively small difference in specific gravity, and there is also a problem that this is separated.

However, even if the above-mentioned conventional technology is applied, it is difficult to separate those having a small specific gravity difference, and a reusable powder (abrasive) having a particle size (for example, about 0.2 to 0.5 mm) is discarded. There is a problem that the waste powder (for example, less than 0.2 mm) remains considerably on the recovery side. Moreover, it is assumed that the prior art is batch processing, and there is a problem of transfer between the site of blasting operation and the site of separation processing.

As a matter of course, there has been a problem that it is desired to perform a separation process on a granular material (specifically, a mixture to be treated) that has undergone a blasting process at the site of blasting work and to immediately reuse it. In addition, there is also a problem of improving the separation accuracy in response to a request to increase the yield of abrasive recovery.

The present inventors have separated and recycled this type of granular material (a mixture to be treated including light-weight foreign substances accompanying it) into recyclable granular material and industrial waste powder that can be reused as an abrasive. We have been researching and developing separation technology that can efficiently recover possible particles.

In particular, a granular material separation processing device is arranged and connected in the upstream of an external suction device such as an existing dust collector or vacuum cleaner, and the recyclable granular material is recovered in the system by the granular material separation processing device. Attempts have been made to reduce the load on external suction equipment by discharging industrial waste powder out of the system.

The present invention (powder body separation processing apparatus and powder body separation processing method) according to the first basic application is one of the deliverables, and the processing object received in the separation processing container by a new apparatus configuration The mixture is separated and processed by suctioning and discharging the industrial waste powder in a multistage manner using the air flow and the difference in specific gravity while controlling the flow in the container and dropping and collecting the recyclable particles.

In addition, while promoting continuous research and development, one of the present inventors [Tomoaki Tokuda], the granular material separation treatment apparatus, the front / rear-stream equipment (apparatus) and associated equipment according to the first basic application. A system unit consisting of the above, accepts the mixture to be treated (introduced into the system), and performs a series of processing from separation processing of industrial waste powder containing recyclable granules and lightweight foreign substances to separation and collection of them We have envisioned a compact separation and recovery processing system that enables systematic processing in the system.

The present invention (powder particle separation and recovery processing system) according to the second basic application is one of the products, and the present invention device (powder particle separation) according to the first basic application on a single platform. It has been compacted by mounting a system unit including a processing apparatus), and has led to the development of a portable and agile granular material separation and recovery processing system.

The problem to be solved by the present invention relating to the first basic application is that the specific gravity and hardness are relatively large and the particle size is a grit-like or shot-like initial shape having a particle size of several millimeters or less, and the accompanying particles. It is the point which isolate | separates the to-be-processed mixture in which the lightweight foreign materials mixed are collected, and collect | recovers recyclable granule in a system. Here, it is necessary to consider that the specific gravity difference between the granular material and the lightweight foreign substances is relatively small.

In particular, powder particles (including lightweight foreign substances accompanying them) that have been subjected to a blasting process using a dry air blasting device are separated, and recyclable particles are collected in the system. The technical solution is to discharge small-sized industrial waste powder out of the system. This will achieve the objective effect of promoting material recycling. In addition, it also includes the objective effect of reducing the load on the external suction device connected downstream.

The present invention according to the first basic application has been made in view of such circumstances, and solves the above-described problems, and is processed in a separation processing container connected to an external suction device such as a dust collector or a vacuum cleaner. The mixture is sucked in and separated while utilizing the air flow and the specific gravity difference while controlling the flow in the container, and the granular material (recyclable granular material) is recovered in the system and contains the industrial waste powder. The present invention provides a granular material separation processing apparatus and a granular material separation processing method for discharging lightweight foreign substances out of the system toward an external suction device.

On the other hand, the problem to be solved by the present invention related to the second basic application is that the granular material separation processing apparatus according to the first basic application and the upstream and downstream linked devices (apparatuses) vacuum connected to the apparatus. ) As a system unit, and a series of systematic processing to separate and collect the reusable particles and industrial waste powder containing lightweight foreign substances in one system. In the point.

In addition, the equipment unit is mounted (collected) in a single frame (portable machine frame, which will be described later) as a platform, and the processing system is functionally configured by arranging the lines in the order of the processes. There is also the point of having mobility that can be installed.

The present invention according to the second basic application is made in view of such circumstances, solves the above problems, and installs an apparatus unit so as to be accessible to a work site (for example, a dry air blast apparatus), The present invention provides a granular material separation and recovery processing system in which a mixture to be processed (for example, abrasive after blasting) generated by work is sucked in and a series of systematic processing from separation to recovery is performed. .

In order to solve the problem, the present invention according to the first basic application is accompanied by a granular material having a grit-like or shot-like initial shape having a relatively large specific gravity and hardness and a particle size of several millimeters or less, and this. In the granular material separation processing apparatus that introduces the mixture to be treated mixed with the lightweight foreign substances into the system and separates the powder and the lightweight foreign substances by a dry process,
The mixture to be treated is sucked and introduced into a separation processing container connected to an external suction device such as a dust collector or a vacuum cleaner, and is separated using an air flow and a specific gravity difference while controlling flow in the container, A powder separation processing device for collecting powder particles in the system and discharging the lightweight foreign substances out of the system toward the external suction device,
A hopper tank that collects and stores the granular material, a suction introduction pipe that is crown-sealed as an upper structure of the hopper tank and receives the mixture to be treated on a peripheral surface, and a suction discharge pipe that is connected to the external suction device on the upper surface A separate processing container,
The separation processing container has a separation cone formed in a funnel-shaped bottom surface, and a cylindrical mouth that hangs downwardly from the tip of the separation cone and has a multi-stage formed by reducing its diameter stepwise.
The suction / discharge pipe has a multi-tube configuration at its tip, and each axis is aligned with the rotation axis (conical axis) of the separation cone, and the pipe diameter is a small diameter corresponding to each diameter of the tube opening It is loosely inserted as a thing and it faces the opening end,
The mixture to be treated sucked and introduced into the separation processing container is guided to drop toward the tube port, and light foreign matters are sucked in multiple stages by the suction and discharge pipe and discharged out of the system, and the remaining powder particles are discharged into the system. It is characterized by being dropped and collected inside.

Further, in the granular material separation processing apparatus having the above-described configuration, the powder is controlled while controlling the flow by cooperating the drop induction of the mixture to be processed by the separation cone and the suction and discharge of the light foreign matters by the suction and discharge pipe in the separation processing container. It is a granular material separation processing method that separates granular materials and lightweight foreign substances,
While lightly separating the mixture to be treated received by introduction of suction using an air flow generated in the separation processing container, it is received on the inner surface of the separation cone to temporarily stop swirling and falling, and includes rebounding While letting it fall freely, inducing a drop in a cascade toward the cylinder mouth of the separation cone, lightweight foreign substances are sucked out in multiple stages by the suction / discharge pipe and discharged out of the system, and the remaining granular material is dropped and collected It is characterized by that.

In order to solve the problem, the present invention according to the second basic application is accompanied by a granular material having a grit-like or shot-like initial shape having a relatively large specific gravity and hardness and a particle size of several millimeters or less, and this. A powder separation process apparatus for separating and processing the powder and the lightweight foreign substances in a dry manner by sucking and introducing the mixture to be treated with the light-weight foreign substances (into the apparatus of the present invention according to the first basic application) The same or the like, and the upstream and downstream linkage devices or linkage devices vacuum-connected to the granular material separation processing device are accommodated in a single frame as a platform, and the lines are arranged in the order of the processes. It is a granular material separation and recovery processing system that performs a typical process,
A hopper tank device in charge of the first process for receiving and temporarily storing the mixture to be treated from outside the system;
A second process for separating and processing into recyclable granules having a relatively large particle size, industrial waste powder and light-weight foreign matters having a relatively small particle size, which are transferred from the hopper tank apparatus and constitute the mixture to be treated in a dry manner. A granular material separation processing device in charge of the process of
A flexible bag container that is installed in the lower stage of the powder and particle separation apparatus so that it can be removed and replaced, and drops and collects the recyclable particles after the separation process,
A dust collecting cyclone apparatus in charge of a third process for separating and processing waste powder and light-weight foreign substances and dust after being piped from the granular material separation processing apparatus;
A flexible bag container that is installed in the lower stage of the dust collection cyclone device so as to be removable and replaceable, and that collects and collects the industrial waste powder and the lightweight foreign matters after the separation process, and
A vacuum cleaner connected to the dust collecting cyclone device and serving as a drive source for the vacuum path of the device system, and in charge of the fourth process for sucking and finally capturing the dust after the separation process With other suction devices,
The apparatus group including the flexible bag container is arranged in a line in the order of processes, and is arranged in a single frame or casing, and an apparatus system unit including a processing system of one line or a plurality of lines arranged in parallel is constructed. , Comprising a portable machine frame for use as a platform that can be transported and installed on-site, and operating the device system unit to systematically and process the first to fourth process steps It is characterized by doing so.

According to the device of the present invention relating to the first basic application, a granular material having a grit-like or shot-like initial shape having a relatively large specific gravity and hardness and a particle size of several millimeters or less, and a light-weight foreign substance accompanying this The mixture to be treated can be separated, the granular material (recyclable granular material) can be recovered in the system, and the industrial waste powder containing lightweight foreign matters can be discharged out of the system.

In particular, materials by efficiently separating powder particles (including lightweight foreign substances accompanying them) made of abrasives that have undergone a blasting process using a dry air blasting device and recovering recyclable particles in the system. It can contribute to the promotion of recycling. In addition, it is possible to reduce the load of the external suction device connected downstream by discharging industrial waste powder (including lightweight foreign substances and abrasive powdered by wear; the same applies hereinafter).

In addition, according to the method of the present invention relating to the first basic application, the particles in a multistage manner are controlled while controlling the flow of the mixture to be processed by cooperating cascaded drop induction and suction discharge toward the tube opening of the separation cone. It is possible to recover the body (recyclable particles) in the system and discharge light foreign substances (industrial waste powder). Naturally, the suction force can be optimally adjusted according to the properties of the mixture to be treated.

Therefore, the scope of application of the method of the present invention covers not only abrasives but also various plastic mixtures, such as waste plastic crushed powder, cereals and other powders, and light-weight foreign substances accompanying them. There is an advantage that it can respond flexibly and has high versatility.

Furthermore, according to the system of the present invention relating to the second basic application, a granular material having a grit-like or shot-like initial shape having a relatively large specific gravity and hardness and a particle size of several millimeters or less is accompanied by this. Introduce a mixture to be treated with a mixture of lightweight foreign substances and separate recyclable granules and industrial waste powder (including lightweight foreign substances) from recyclable granules and industrial waste powder (including lightweight foreign substances). In-system processing can be performed by an apparatus system unit that systematically performs a series of process processes up to fractional collection.

In particular, the equipment unit is mounted on a portable machine frame and can be transported and installed on-site, so that it can be installed at work sites (for example, dry air blasting equipment) and the mixture to be processed generated in the work. (For example, abrasive material after blasting) is sucked in, the recyclable granules and the industrial waste powder in the mixture to be treated are separated efficiently, and the recyclable granules are recovered in the system, so that material recycling Can contribute to the promotion. At the same time, industrial waste powder can be collected separately without being discharged out of the system.

It is a perspective explanatory view of an example device. It is sectional drawing explanatory drawing of an Example apparatus. It is P section detailed explanatory drawing in FIG. It is a schematic explanatory drawing which shows the flow control of the to-be-processed mixture in a separation processing container. It is each sieve test result regarding the particle size distribution which shows the experimental fact which concerns on the performance (effect) of an Example apparatus, and its data plot. Here, (a) is for the untreated mixture (test material) after blasting, (b) is for the recyclable granules after separation treatment, and (c) is for the waste powder after separation treatment. is there. It is a structure outline explanatory view showing the example of connection in the case where an apparatus system is constituted by an example device, a blast device (front flow), and an external suction device (back flow). It is a front view composition outline explanatory view of an example system. It is a planar view structure outline explanatory drawing of an Example system. FIG. 8 is a schematic explanatory diagram taken along the line II in FIG. It is a structure outline explanatory drawing of the example system which shows the example of connection with a work site. It is sectional view explanatory drawing of a granular material separation processing apparatus. In FIG. 11, it is a P part detailed explanatory drawing.

The mode for carrying out the present invention is the granular material separation processing apparatus having the above configuration according to the first basic application, wherein the separation cone is formed by radiating rectification ribs made of a plurality of elastic bodies on the inner surface. The

Here, the mixture to be treated is optimally subjected to a blasting process using a dry air blasting apparatus. It doesn't matter whether it is a metallic or non-metallic abrasive.

Moreover, in the granular material separation processing method of the above configuration according to the first basic application, in order to augment the fall induction of the mixture to be treated, rectifying ribs made of a plurality of elastic bodies are formed radially on the inner surface of the separation cone. The mixture to be treated.

に お い て In the granular material separation and recovery processing system with the above configuration according to the second basic application, the granular material separation processing device may use the granular material separation processing device according to the first basic application.

Its characteristic configuration is a hopper tank part for collecting and storing powder particles, a suction inlet pipe that is sealed as a top structure of the hopper tank part and receives the mixture to be treated on the peripheral surface, and a suction discharge connected to a suction device on the upper surface A separation processing container provided with a pipe, the separation processing container is formed in a funnel-shaped bottom surface with a separation cone and a downwardly projecting drop from the tip of the separation cone, and its diameter is reduced stepwise. It has a multi-stage formed tube mouth,
The suction / discharge pipe has a multi-tube configuration at its tip, and each axis is aligned with the rotation axis (conical axis) of the separation cone, and the pipe diameter is a small diameter corresponding to each diameter of the tube opening It is loosely inserted as a thing and it faces the opening end,
Inducing and dropping the treated mixture sucked and introduced into the separation processing container toward the cylinder port, the waste powder is sucked in multiple stages by the suction discharge pipe and discharged to a downstream dust collecting cyclone device, It is assumed that the remaining granular material is dropped and collected in the flexible bag container.

Here, the mixture to be treated is optimally subjected to a blasting process using a dry air blasting device (whether metallic grinding material or non-metallic grinding material), and the hopper tank device is stored directly or temporarily. Is fed by pressure.

実 施 An example (hereinafter referred to as Example device X) of the granular material separation processing device of the present invention according to the first basic application will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective explanatory view of the apparatus X of the embodiment.

As shown in the figure, the embodiment apparatus X is connected to an external suction device (not shown) such as a dust collector or a vacuum cleaner, and is made of a system abrasive material that has undergone a blasting process by a dry air blast device (not shown). And the mixture to be treated, which is made of light foreign substances accompanying the body, is sucked into the separation processing container 1 and separated by applying the air flow and the difference in specific gravity in a dry manner to collect the granular material in the system. , Lightweight foreign matters (including industrial waste powder) are discharged out of the system toward an external suction device.

The separation processing container 1 is a hopper tank 4 for collecting and storing powder particles, a crown seal as an upper structure of the hopper tank 4, a suction introduction pipe 2 for receiving a mixture to be processed on the peripheral surface, and an upper surface A suction discharge pipe 3 connected to an external suction device is provided. A removable collection container 41 is disposed below the hopper tank 4.

FIG. 2 is a cross-sectional explanatory view of the embodiment apparatus X, and FIG.

As shown in the drawing, the internal structure of the separation processing container 1 has a separation cone 11 whose bottom surface is formed in a funnel shape, and hangs downward from the tip of the separation cone 11 in a convex manner, and its diameter is reduced stepwise. A cylindrical port 13 formed in multiple stages is provided.

Also, the separation cone 11 is formed with radiation straightening ribs 12 made of a plurality of elastic bodies on the inner surface.

The suction / discharge pipe 3 has a multi-tube structure (31; 31) at its tip, the axis of each is aligned with the rotation axis (conical axis) of the separation cone 11, and the diameter of each pipe is set to each of the tube ports 13. It is assumed that it is loosely inserted as a small diameter corresponding to the diameter and faced to the opening end.

FIG. 4 is a schematic explanatory view in cross section for schematically explaining the flow control of the mixture to be processed in the separation processing container.

As shown in FIGS. 3 and 4, the mixture to be treated M sucked and introduced into the separation processing container 1 is guided to drop toward the tube port 13, and light-weight foreign matter m2 (by the suction discharge pipe 3 (31; 31)). (Including industrial waste powder) is sucked out in multiple stages and discharged out of the system, and the remaining powder m1 (recyclable particles) is freely dropped and recovered in the system.

More specifically, the mixture to be treated M is lightly separated using an air flow generated in the separation processing vessel, and is received on the inner surface of the separation cone 11 to temporarily stop swirling and falling. While letting it fall freely, guiding the fall to the tube port 13 in a cascading manner, the suction discharge pipe 3 (31; 31) sucks lightweight foreign matter m2 (including industrial waste powder) in multiple stages and discharges it outside the system. The remaining granular material m1 (recyclable granular material) is dropped and collected.

Here, a flow straightening rib 12 made of a plurality of elastic bodies is formed on the inner surface of the separation cone 11 to receive the mixture to be processed M (m1; m2), thereby preventing the flow in the swirling direction and dropping. The guidance is to be augmented.

Hereinafter, the operational effects of the embodiment apparatus X will be described based on experimental facts.

The specimen is an untreated garnet abrasive (mixture to be treated) after blasting, and FIG. 5 (a) is a result of a sieve test (weighing) showing its particle size distribution (particle size) and its data plot. is there.

As can be understood from this figure (result of the sieve test), the powder particles of less than 0.2 mm account for 61.8% by weight with respect to the total amount of the mixture to be treated.

FIG. 5 (b) shows a sieve test (weighing scale) showing the particle size distribution (particle size) of a reusable granular material (same as the recyclable granular material in the figure) recovered in the system after the separation treatment. The result and its data plot.

As can be understood from this figure (results of the sieve test), the proportion of the granular material of less than 0.2 mm with respect to the total amount of the mixture to be treated accounts for 44.6% by weight.

FIG. 5 (c) shows the result of the sieve test (weighing scale) showing the particle size distribution (particle size) of the waste powder discharged from the system after separation (same as the industrial waste powder with the name in the figure) and its data. It is a plot.

As can be understood from this figure (result of the sieve test), the proportion of the granular material of less than 0.2 mm with respect to the total amount of the mixture to be treated occupies 84.9% by weight.

In addition, the ratio of the recyclable granules collected in the system after the separation treatment and the waste powder discharged out of the system was 65:35.

[Discussion and effect]
First, the ratio of recyclable granules (particle size of 0.2 mm or more) and industrial waste powder (particle size of less than 0.2 mm) in the untreated mixture after blasting is about 4: 6 [FIG. see a)].

Therefore, the treated mixture (untreated after blasting) is subjected to separation treatment, and 65% by weight of the total amount of the treated mixture is recovered in the system (data not shown).

Of these, the proportion of particles less than 0.2 mm accounted for 44.6% by weight (see FIG. 5 (b)), and the remaining 55.4% by weight (that is, about 30% of the total amount of the mixture to be treated) It can be said that it is a granular material that can be effectively used without any problem in reuse.

Actually, virgin material (grinding material) equivalent to 35% by weight of the reduced amount is replenished to 65% by weight of recyclable particles collected in the system and used for reuse.

Indeed, since particles that are less than 0.2 mm are mixed in the recyclable particles, there may be a concern that the grinding performance may be slightly inferior in the blasting operation in reuse.

However, since the fine particles are also carried on the compressed air and collide with the surface to be ground, the grinding performance is not greatly affected. However, the dust will increase slightly.

In any case, this material recycling contributes to an unprecedented significant cost reduction in that about 60% of the mixture to be treated that has undergone a blasting process with a virgin material is reused.

Of course, it may be considered that the blasted abrasive that has been reused is treated again as a mixture to be treated.

As a matter of course, the proportion of industrial waste powder increases with the number of reprocessing, and the recovery rate of recyclable granules decreases, but the proportion of virgin material (grinding material) to be supplemented increases. Therefore, there is no concern that the grinding performance will be greatly reduced. Considering the cost effectiveness, it is practical to keep the number of reprocessing only a few.

On the other hand, a separation process is performed on the mixture to be treated (untreated after blasting), and 35% by weight of the total amount of the mixture to be treated is discharged out of the system (data not shown).

Of these, about 60% are powders of less than 0.1 mm, and more than 20% are powders of 0.1 mm or more and less than 0.2 mm, and generally more than 80% (that is, about 30% of the total amount of the mixture to be treated). Is the industrial waste powder [see FIG. 5 (c)].

Therefore, over 80% of the mixture to be treated discharged out of the system is waste powder, and dust treatment can be carried out without imposing an excessive load on the downstream dust collector that accepts this.

The remaining 20% is recyclable particles (particle size of 0.2 mm or more) mixed on the disposal side (industrial waste powder), which necessitates disposal. This is the allowable limit of separation accuracy.

FIG. 6 is a schematic configuration explanatory diagram showing a connection example in the case where a processing system is configured by the embodiment device X, the blast device (front flow), and the external suction device (back flow).

As can be understood from FIG. 6, the dry air blast device 5 is connected to the upstream of the embodiment device X, the dust collector 6 is connected to the downstream, and the vacuum cleaner 7 is connected to the dust collector 6.

Here, instead of the dry air blast device 5, a floor surface sweeper 51 or a mouthpiece (hose attachment) 52 may be connected. A pipe line system (including the inside of the container) from suction introduction to suction discharge is a suction path using the vacuum function of the vacuum cleaner 7 as a drive source.

In this way, since each device related to blasting work is placed on site and linked and connected, workability is improved and cost reduction is possible through material recycling.

粉 A granular material separation and recovery system (hereinafter referred to as Example System Z) which is an embodiment of the present invention relating to the second basic application will be described below with reference to the accompanying drawings.

7 is a front view configuration outline explanatory diagram, FIG. 8 is a plan view configuration overview explanatory diagram, and FIG. 9 is an II arrow configuration overview explanatory diagram in FIG.

In addition, FIG. 10 shows a schematic configuration diagram of an example system Z showing an example of connection with a work site.

As shown in the drawing, the embodiment system Z sucks a mixture made of abrasives that have undergone a blasting process by a dry air blasting device 5 [see FIG. Before and after the powder separation processing device X (see FIG. 11 to be described later) is introduced and vacuum-connected to the powder separation processing device X. The flow linkage device or linkage device (8-6-7) is housed in a single frame as a platform, and is arranged in a line in the order of processes for systematic processing.

The hopper tank device 8 is in charge of a first process for receiving and temporarily storing a mixture to be treated (in the figure, a blast process by a dry air blast apparatus) from outside the system. When the mixture to be treated is pumped from outside the system, it is received while degassing through the bag filter 81.

The granular material separation treatment apparatus X (same as the embodiment apparatus X described in the embodiment 1) is transferred and introduced from the hopper tank apparatus 8 through the screw feeder 82, and has a relatively large particle size that constitutes the mixture to be treated in a dry type. Responsible for the second process for separating the recyclable particles m1 and the industrial waste powder m2 having a relatively small particle size (details of the apparatus configuration will be described later). In the lower stage, a detachable and replaceable flexible bag container 4a (hereinafter referred to as a flexible container bag) for dropping and collecting and storing the recyclable granules after separation is installed.

The dust collecting cyclone device 6 is introduced from the granular material separation processing device X by piping, and is in charge of the third process for separating the waste powder and dust after the separation processing. In the lower stage, a flexible container bag 4b that can be attached and detached is installed to drop and collect the industrial waste powder m2 after the separation process.

The vacuum cleaner or other suction device 7 is connected to the dust collecting cyclone device 6 as a pipe and serves as a drive source for the vacuum path of the device system. In addition, the vacuum cleaner or other suction device 7 sucks and introduces the dust after the separation process and finally captures it. 4 process processing.

The portable machine frame 9 has a group of devices (8-X-6-7) including the flexible container bag 4 arranged in the order of the process, and is placed in a single frame or casing, and one line or a plurality of lines arranged in parallel. In addition to constructing a system unit consisting of the above processing systems, it is used as a platform that can be transported and installed on the site. The mode of the system unit shown in the figure shows two lines in parallel [FIGS. 8 and 10].

Then, a compact processing system for operating the apparatus system unit in an apparatus is constructed, and the first to fourth process processes are organized and processed in the system.

FIG. 11 is a cross-sectional view of FIG. 11 and FIG. 12 is a detailed view of a portion P in FIG. 11 with respect to the granular material separation processing device X (same as Example device X described in Example 1) in charge of the second process. Indicates.

As shown in the figure, the granular material separation processing apparatus X includes a flexible container bag 4 that collects and stores recyclable granular material m1, and a suction introduction pipe 2 that is disposed as an upper structure of the flexible container bag 4a and receives the mixture to be processed M on its peripheral surface. And a separation processing container 1 provided with a suction / discharge pipe 3 connected to the dust collecting cyclone device on the upper surface.

Here, the specific structure of the separation processing container 1 is a separation cone 11 formed in a funnel-shaped bottom, and is formed in a multi-stage structure by dropping downward from the tip of the separation cone 11 in a stepwise manner and reducing its diameter stepwise. It has the cylinder port 13 made. The separation cone 11 is radially formed with rectifying ribs 12 made of a plurality of elastic bodies on the inner surface.

In addition, the suction / discharge pipe 3 has a multi-tube configuration at its tip, and the respective shaft cores are aligned with the rotation axis (conical axis) of the separation cone 11, and their pipe diameters correspond to the respective diameters of the tube port 13. It is set as the structure which loosely inserted as a small diameter thing to face, and faced the opening edge part.

The mixture to be treated M sucked and introduced into the separation processing container 1 is guided to drop toward the cylinder port 13 and the waste powder m2 is sucked in multiple stages by the suction / discharge pipe 3 to wake the dust collecting cyclone device 6 in the downstream. The remaining recyclable particles m1 are dropped and collected in the flexible container bag 4a.

The present invention (powder and particle separation processing apparatus and powder and particle separation processing method) according to the first basic application is linked (connected) to an existing external suction device, so that a cascade-like drop occurs in the separation processing container. Specific gravity in that lightweight foreign substances (industrial waste powder) can be discharged in multiple stages and recyclable granules can be recovered in the system while controlling the flow of the mixture to be treated by cooperating induction and suction discharge. The present invention proposes an innovative method for increasing the separation accuracy of a mixture to be treated consisting of a powder and a small amount of foreign substances having a small difference.

The present invention (powder body separation and recovery processing system) according to the second basic application is an apparatus system comprising devices (apparatuses) in charge of process processing of an abrasive (mixture to be processed) that has undergone a blasting process related to blasting By constructing the unit and mounting it on a portable machine frame that can be transported and installed on-site, a series of processes from separation to separation and collection of recyclable granules and industrial waste powder can be performed within one system. It is performed systematically, and is highly useful as a flexible and compact granular material separation and recovery treatment system.

In any of the present inventions, it is particularly useful in improving workability and promoting cost reduction by material recycling when separating and recovering abrasives that have undergone the blasting process of a dry air blasting apparatus as a mixture to be treated. A contribution can be expected in this field.

DESCRIPTION OF SYMBOLS 1 Separation processing container 11 Separation cone 12 Rectification rib 13 Cylinder port 2 Suction introduction pipe 3 Suction discharge pipe 31 Multiple pipe 4 Hopper tank 41 Collection container 5 Dry type air blasting device 51 Floor sweeper 52 Suction port (hose attachment)
6 Dust collector (dust collection cyclone device)
7 Vacuum cleaner (suction device)
M Workpiece mixture m1 Recyclable granules (reusable abrasive)
m2 Industrial waste powder (including lightweight foreign materials and abrasive powdered by wear)
X granular material separation processing device (Example device)

4a Flexible bag container (flexible bag)
4b Flexible bag container (flexible bag)
8 Hopper tank device 81 Bag filter 82 Screw feeder 9 Portable machine frame (platform)
Z Powder separation and recovery system (Example system)

Claims (12)

1. Introducing into the system a mixture in which a granular material having a grit-like or shot-like initial shape having a relatively large specific gravity and hardness and a particle size of several mm or less, and light-weight foreign substances accompanying the mixture are mixed, In the granular material separation processing apparatus for separating the granular material and the lightweight foreign substances in a dry manner,
   The mixture to be treated is sucked and introduced into a separation processing container connected to an external suction device such as a dust collector or a vacuum cleaner, and is separated using an air flow and a specific gravity difference while controlling flow in the container, A powder separation processing device for collecting powder particles in the system and discharging the lightweight foreign substances out of the system toward the external suction device,
   A hopper tank that collects and stores the granular material, a suction introduction pipe that is crown-sealed as an upper structure of the hopper tank and receives the mixture to be treated on a peripheral surface, and a suction discharge pipe that is connected to the external suction device on the upper surface A separate processing container,
   The separation processing container has a separation cone formed in a funnel-shaped bottom surface, and a cylindrical mouth that hangs downwardly from the tip of the separation cone and has a multi-stage formed by reducing its diameter stepwise.
   The suction / discharge pipe has a multi-tube configuration at its tip, and each axis is aligned with the rotation axis (conical axis) of the separation cone, and the pipe diameter is a small diameter corresponding to each diameter of the tube opening It is loosely inserted as a thing and it faces the opening end,
   The mixture to be treated sucked and introduced into the separation processing container is guided to drop toward the tube port, and light foreign matters are sucked in multiple stages by the suction and discharge pipe and discharged out of the system, and the remaining powder particles are discharged into the system. A granular material separation processing apparatus characterized by being dropped and collected inside.
2. 2. The granular material separation processing apparatus according to claim 1, wherein the separation cone is formed by radiating rectification ribs made of a plurality of elastic bodies on the inner surface.
3. The granular material separation treatment apparatus according to claim 1, wherein the mixture to be treated has undergone a blasting process using a dry air blasting apparatus.
4. Separation treatment of powdered particles made of abrasives that are connected to external suction devices such as dust collectors and vacuum cleaners, and subjected to a blasting process using a dry air blasting device, and to-be-processed mixtures made up of light foreign substances Introducing suction into a container, separating while utilizing the air flow and the specific gravity difference while controlling the flow in the container, collecting the granular material in the system, and removing the light foreign matter from the external suction device It is a granular material separation processing device for discharging out of the system toward the
   The separation processing container is connected to a hopper tank for collecting and storing the powder and particles, a suction inlet pipe sealed as a top structure of the hopper tank and receiving the mixture to be processed on the peripheral surface, and the external suction device on the upper surface A suction discharge pipe that
   A separation cone having a bottom surface of the separation processing vessel formed in a funnel shape, and a cylindrical mouth that hangs downwardly from the tip of the separation cone and has a multi-step formed by reducing its diameter stepwise,
   The suction / discharge pipe has a multi-tube configuration at its tip, and each axis is aligned with the rotation axis (conical axis) of the separation cone, and the pipe diameter is a small diameter corresponding to each diameter of the tube opening It is loosely inserted as a thing and it faces the opening end,
   The mixture to be treated that has been sucked into the separation container is guided to drop toward the tube port, and lightweight foreign substances are sucked in multiple stages through the suction discharge pipe and discharged outside the system, and the remaining powder particles are free. A granular material separation processing apparatus, wherein the apparatus is dropped and collected in the system.
5. 5. The granular material separation processing apparatus according to claim 4, wherein the separation cone is formed by radiating rectifying ribs made of a plurality of elastic bodies on the inner surface.
6. In the granular material separation processing apparatus according to any one of claims 1 to 5,
   In the separation container, the powder and light foreign substances are separated from each other while controlling the flow by collaborating the drop induction of the mixture to be treated by the separation cone and the suction and discharge of the light foreign substances by the suction / discharge pipe. A method for separating powder particles,
   While lightly separating the mixture to be treated received by introduction of suction using an air flow generated in the separation processing container, it is received on the inner surface of the separation cone to temporarily stop swirling and falling, and includes rebounding While letting it fall freely, inducing a drop in a cascade toward the cylinder mouth of the separation cone, lightweight foreign substances are sucked out in multiple stages by the suction / discharge pipe and discharged out of the system, and the remaining granular material is dropped and collected A method for separating a granular material, characterized by comprising:
7. 7. A method for separating a granular material according to claim 6, wherein in order to augment the drop induction of the mixture to be treated, a flow straightening rib made of a plurality of elastic bodies is formed on the inner surface of the separation cone to receive the mixture to be treated. .
8. Separation treatment of powdered particles made of abrasives that are connected to external suction devices such as dust collectors and vacuum cleaners, and subjected to a blasting process using a dry air blasting device, and to-be-processed mixtures made up of light foreign substances Introducing suction into the container, using the air flow and the difference in specific gravity to separate the powder while controlling the flow in the container, and recovering the powder particles in the system, and removing the light foreign matter from the external suction device A hopper tank that collects and stores the granular material, and a suction introduction pipe that is crown-sealed as an upper structure of the hopper tank and receives the mixture to be treated on its peripheral surface. And in the granular material separation processing apparatus comprising a suction discharge pipe connected to the external suction device on the upper surface,
   A separation cone in which the bottom surface of the separation processing vessel is formed in a funnel shape, and a downwardly projecting downward from the tip of the separation cone, and a multi-stage tube opening with a reduced diameter is formed in stages.
   The suction and discharge pipe has a multi-tube configuration at the tip, each axis is aligned with the rotation axis (conical axis) of the separation cone, and the pipe diameter is small corresponding to each diameter of the tube opening As a loose insertion and facing the opening end,
   In the separation processing container, the powder particles and the lightweight foreign matters are controlled while controlling the flow by cooperating the fall induction of the mixture to be treated by the separation cone and the suction and discharging of the lightweight foreign matters by the suction and discharge pipe. And a granular material separation treatment method, wherein
   While lightly separating the mixture to be treated received by introduction of suction using an air flow generated in the separation processing container, it is received on the inner surface of the separation cone to temporarily stop swirling and falling, and includes rebounding It was left to free fall, and while guiding the fall in a cascade toward the tube opening, lightweight foreign substances were sucked out in multiple stages by the suction discharge pipe and discharged out of the system, and the remaining granular material was dropped and collected A granular material separation treatment method.
9. 9. The method for separating a granular material according to claim 8, wherein in order to augment the drop induction of the mixture to be treated, a flow straightening rib made of a plurality of elastic bodies is formed on the inner surface of the separation cone to receive the mixture to be treated. .
   
10. Suction and introduction of a mixture to be treated, in which a granular material having a grit-like or shot-like initial shape having a relatively large specific gravity and hardness and a particle size of several millimeters or less, and light-weight foreign substances accompanying it, is introduced and dried. Including a granular material separation processing device that separates the granular material and the light-weight foreign matter, and a platform is used as a front-rear linking device or a linking device that is vacuum connected to the granular material separation processing device. It is a granular material separation and recovery processing system that is placed in a single frame and arranged in a line in the order of processes to perform systematic processing,
    A hopper tank device in charge of the first process for receiving and temporarily storing the mixture to be treated from outside the system;
    A second process for separating and processing into recyclable granules having a relatively large particle size, industrial waste powder and light-weight foreign matters having a relatively small particle size, which are transferred from the hopper tank apparatus and constitute the mixture to be treated in a dry manner. A granular material separation processing device in charge of the process of
    A flexible bag container that is installed in the lower stage of the powder and particle separation apparatus so that it can be removed and replaced, and drops and collects the recyclable particles after the separation process,
    A dust collecting cyclone apparatus in charge of a third process for separating and processing waste powder and light-weight foreign substances and dust after being piped from the granular material separation processing apparatus;
    A flexible bag container that is installed in the lower stage of the dust collection cyclone device so as to be removable and replaceable, and that collects and collects the industrial waste powder and the lightweight foreign matters after the separation process, and
    A vacuum cleaner connected to the dust collecting cyclone device and serving as a drive source for the vacuum path of the device system, and in charge of the fourth process for sucking and finally capturing the dust after the separation process With other suction devices,
    The apparatus group including the flexible bag container is arranged in a line in the order of processes, and is arranged in a single frame or casing, and an apparatus system unit including one line or a plurality of lines of parallel processing systems is constructed. A portable machine frame for use as a platform that can be transported and installed on-site,
    A granular material separation and recovery processing system, wherein the apparatus system unit is operated to perform the first to fourth process processes systematically and within the system.
11. The powder separation processing device is connected to a hopper tank part for collecting and storing the powder, a suction inlet pipe sealed as a top structure of the hopper tank part and receiving the mixture to be treated on the peripheral surface, and a suction device on the upper surface A separation processing container provided with a suction / discharge pipe, and the separation processing container is formed in a funnel-like shape with a bottom formed in a bottom surface, and is projected downward from the tip of the separation cone in a stepwise manner. It has a tube port formed in multiple stages by reducing,
    The suction / discharge pipe has a multi-tube configuration at its tip, and each axis is aligned with the rotation axis (conical axis) of the separation cone, and the pipe diameter is a small diameter corresponding to each diameter of the tube opening It is loosely inserted as a thing and it faces the opening end,
    Inducing and dropping the mixture to be treated sucked into the separation processing container toward the tube port, the suction discharge pipe sucks lightweight foreign substances in multiple stages and discharges them to the downstream dust collecting cyclone device, 12. The granular material separation and recovery processing system according to claim 11, wherein the remaining granular material is dropped and collected in a flexible bag container.
12. 12. The granular material separation and recovery processing system according to claim 10 or 11, wherein the mixture to be treated has been subjected to a blasting process by a dry air blasting device, and is directly or temporarily stored and pumped and supplied to the hopper tank device.

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